iSpot and iSpot Mobile are participatory science applications that allow users to identify and share observations of natural history. iSpot has over 250,000 observations, 280,000 images, 30,000 registered users who have identified 7,000 species. The iSpot mobile app enables this functionality on smartphones, allowing users to upload observations and identify species offline or online. An evaluation found the app to be stable, easy to use and intuitive. Future plans include expanding internationally with improved social and mapping tools.